When it breaks this bond, that chlorine atom, a free chlorine atom comes down and reacts, this is ozone, with the ozone in the upper atmosphere. 当它打破这个化学键,氯原子,一个自由的氯原子下来,和在大气层的上方的臭氧反应,这就是臭氧,在大气上层有臭氧。
Some electrons, called free electrons, are free to move from atom to atom within a conductor. A few percent of the CO2 molecules in the air manage to find such electrons. 有些电子,被称为自由电子,能在导体内自由地从一个原子游离到另一个原子。空气中的一部分co2分子会吸引那些自由电子。
The paper reviewed the modification of chitosan by free radical polymerization and atom transfer radical polymerization ( ATRP), emphasized the application of ATRP on graft copolymerization of chitosan. 综述了普通自由基聚合和原子转移自由基聚合(ATRP)反应对壳聚糖及其衍生物进行修饰改性的研究现状。着重介绍了ATRP技术在壳聚糖接枝改性方面的应用。
If the nitrating agent is the O3-NO2 system, free aromatic cationic radicals would be formed and the spin density of each carbon atom is the determining factor of product distribution. O3-NO2体系的硝化反应中,产生了游离的芳烃正离子自由基(ArH~+),其产物分布决定于ArH~+上的自旋密度分布。
The free-free radiative transition cross sections of free electron in the potential field of neutral atom Si is obtained through the scattering phase shifts and calculation the direct matrix elements. 用直接计算矩阵元方法和计算碰撞相移方法计算了电子在中性si原子势场中的自由-自由跃迁吸收截面。
Theory calculation for the free-free radiative transition of the free electron in the potential field of neutral atom 电子在中性原子势场中的自由-自由跃迁吸收截面的理论计算
The formation free energies of the intermetallic compounds between Ho and Co, the diffussion coefficients and the diffusion activation energy of Ho atom in the alloy phase are determined. 测定了Ho2Co17等五种金属间化合物的生成自由能和Ho原子在Ho2Co17中的扩散系数及扩散活化能。
The former are the free valences on the carbon atom in the group and the latter on the other atom. 一类是其它原子上的自由价键,为受限价键。
In this paper, Highest Obital Figure Rules is introduced, which can not only accurately infer the structures of molecular type free radicals, molecular type ions and complex ions, but also analyse the hybridization type of the equality and inequality of the central atom. 提出最高轨道数法,不仅能准确地推测分子型分子的构型,也能推测出自由基、分子型离子、以及配离子的构型,还能分析得出中心原子等性或不等性杂化类型。
Bound-free non-relativistic transition matrix element in atom 原子束缚&自由非相对论跃迁矩阵元
Calculation for Radiative Transition of Free Electron in the Potential Field of Si Atom 电子在Si原子势场中跃迁吸收截面的计算
By use of this method, not only the propagation matrix of atom beam in free space under the influence of gravity can be, but also the interaction matrix of atom beam with π/ 2 and π pulse can be obtained. 利用这种方法不但能得到原子束在重力的影响下在自由空间中的传输矩阵,也可以得到原子束与π/2和π脉冲的相互作用矩阵。
The free volume holes in gelatin may restrain the process of the silver ion to be reduced to silver atom in the space of the different electron cloud density, therefor the production and deposition of silver atom occurred in filamentary form. 照相明胶的自由体积空穴在电子密度空间限制了银离子还原为银原子的过程,并使得银原子的沉积生长以丝状的形式进行。
It is essential to prepare high concentration and stable free metal atoms at their electronic ground state in the experimental study of the transition metal of high metal atom dynamics of electronic excited states. 在实验上研究过渡金属高电子激发态金属原子动力学,需要制备高浓度、稳定的处在电子基态的自由金属原子。